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。s+兩位數(shù)的整數(shù)復(fù)數(shù)形式,在某人多大歲數(shù)時(shí) , 故選D。 in their fifties【答案】 D 【解析】【分析】句意: 這家醫(yī)院的大多數(shù)醫(yī)生都出生于20世紀(jì)70年代,現(xiàn)在他們都是50多歲。D.in the 1970s。in 1970s。in the 1970。 【點(diǎn)評(píng)】考查基數(shù)詞和序數(shù)詞,注意基數(shù)詞和序數(shù)詞之間的用法區(qū)別。表示幾號(hào)樓,如果先說building,那么后面的數(shù)字使用基數(shù)詞,如果數(shù)字在前就是用序數(shù)詞。D.C.B.29.—What should we do now, Mr. Wang? —Please go to Building ________ to wele the ________ new teacher.A.故答案是B。in one39。D.thirtyB.thirtieth掌握分?jǐn)?shù)的表達(dá)方式和主謂一致的用法。故選B。 分?jǐn)?shù)的表達(dá):分子為基數(shù)詞;分母為序數(shù)詞。twothird, has【答案】 B 【解析】【分析】句意:——爸爸,蘋果有三分之二已經(jīng)壞了。C. haveB. haved better eat up the rest as soon as possible.A.of the apples 【點(diǎn)評(píng)】考查數(shù)詞,準(zhǔn)確掌握數(shù)詞的寫法。A第十二;B十二;C二十;D三十,根據(jù)It39?!挥弥?!還有20分鐘。D.twentyB.twelfths still _________ minutes left. It39。clock. —Don39。 【點(diǎn)評(píng)】考查數(shù)詞的用法,牢記數(shù)詞表示確數(shù)和概數(shù)的不同用法。millions of【答案】 B 【解析】【分析】句意:公司決定花5百萬為那個(gè)小村莊的孩子們建一所學(xué)校。C.millionyuan building a school for the children in that small village. A. 【點(diǎn)評(píng)】考查倍數(shù)的表達(dá),注意倍數(shù)+as+形容詞+as的用法。three times more cars than【答案】 B 【解析】【分析】句意:在引進(jìn)新設(shè)備后.我們的工廠在2004年的產(chǎn)量是前一年的三倍。three times as many carsC. in 2004 as the year before. A.24.Having introduced the new equipment, our factory turned out根據(jù)可數(shù)名詞復(fù)數(shù)guests和 at least eight people dead and several others ,而其他幾個(gè)人失蹤 ,可知總?cè)藬?shù)不確定,因此用固定搭配dozens of,幾十,數(shù)詞的復(fù)數(shù)形式+of,表示概數(shù),故選A。D.C.B. guests sank in the Tigris River in central Baghdad late on Thursday, leaving at least eight people dead and several others missing. A. 【點(diǎn)評(píng)】考查倍數(shù)的表達(dá)方式。more than twice as many【答案】 D 【解析】【分析】句意:美國人現(xiàn)在每個(gè)人吃蔬菜的比1910年的兩倍還多。as twice as manyC.more than twice 【點(diǎn)評(píng)】考查序數(shù)詞的基本用法?!堑?,這是她第六次獲得一等獎(jiǎng)。D.the sixB.sixs excited to hear that Jessie J got the King of Singer in the end. — Yes, it39。注意基數(shù)詞表示數(shù)量,序數(shù)詞表示順序。根據(jù)故選A。twelve十二;第二個(gè)空格前有定冠詞the,空格后有可數(shù)名詞month,單數(shù),要用序數(shù)詞表示順序。九月是一年中的第九個(gè)月。D.C.B.20.A year is divided into ______ months. September is the _____ month of the year. A.